SERPINE1 and chronic myelogenous leukemia, BCR-ABL1 positive: Interestingly, SERPINE1 expression was significantly higher in CML CD34+ cells than in NBM CD34+ cells (28-fold, p < 0.05) (Fig. 3E), and SERPINE1 expression was significantly correlated with miR-181a expression in CML CD34+ cells (Fig. 3F).